I have read that before but it was not clear for me but today I think I understand it better. I have added all yaml files to my dcproj and they are visible now but I think it should be recognized as kubernetes (just like here) and currently I see this:
14:01:03.770 DEBUG: '.k8s\.template\base\netpolicy.yaml' indexed with language 'yaml'
14:01:06.222 DEBUG: '.k8s/.template/base/netpolicy.yaml' generated metadata with charset 'windows-1250'
14:01:06.222 DEBUG: File without identifier 'AWSTemplateFormatVersion': .k8s/.template/base/netpolicy.yaml
Is this proper behavior?